212222012222 has 32 divisors (see below), whose sum is σ = 364550630400. Its totient is φ = 91770523200.

The previous prime is 212222012221. The next prime is 212222012227. The reversal of 212222012222 is 222210222212.

It is a junction number, because it is equal to n+sod(n) for n = 212222012194 and 212222012203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212222012221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2596847 + ... + 2677322.

It is an arithmetic number, because the mean of its divisors is an integer number (11392207200).

Almost surely, 2^212222012222 is an apocalyptic number.

212222012222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212222012222 is a deficient number, since it is larger than the sum of its proper divisors (152328618178).

212222012222 is a wasteful number, since it uses less digits than its factorization.

212222012222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5274272.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 212222012222 its reverse (222210222212), we get a palindrome (434432234434).

The spelling of 212222012222 in words is "two hundred twelve billion, two hundred twenty-two million, twelve thousand, two hundred twenty-two".